8mm Forum: Bell and howell 33sr

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Topic: Bell and howell 33sr

Mark Nightingale
Junior
Posts: 3
From: Wales, UK
Registered: Nov 2016

posted November 28, 2016 01:28 AM

Hi. I have a bell and howell 33sr. The speed switch doesn't work anymore and it's stuck playing fast. Does anyone have any ideas please. Thanks.

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Janice Glesser
Film Goddess

Posts: 3468
From: Sunnyvale, CA USA
Registered: Sep 2011

posted November 28, 2016 03:13 PM

Welcome to the forum Mark! I don't have a schematic for the 33SR...but I had a similar problem with a Sankyo 600. I solved the speed issue by replacing a 1000uf capacitor and the power transistor.

There are 2 pots that can adjust the speed for the 18fps and the 24fps depending on the switch position. See if turning these makes any speed change. If not then most likely a component is bad.

Visually check all the capacitors to see if any look bad or buldging. Although even if they look ok...they may not be good. Not sure...but I'm thinking that large 1000uf might be the one connected to the speed circuit. You really need to remove the capacitor to check it with a capacitor meter. You should remove the power transistor and check it also.

[ November 28, 2016, 10:15 PM: Message edited by: Janice Glesser ]

--------------------
Janice

"I'm having a very good day!"
Richard Dreyfuss - Let It Ride (1989).

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Mark Nightingale
Junior
Posts: 3
From: Wales, UK
Registered: Nov 2016

posted November 29, 2016 10:05 AM

Thank you I will take a look over the weekend hopefully

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Mark Nightingale
Junior
Posts: 3
From: Wales, UK
Registered: Nov 2016

posted December 08, 2016 03:01 PM

Thank you I will take a look over the weekend hopefully

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